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<p align="justify">The RT8561A is a 40V 8-CH LED driver capable of delivering 30mA to each channel with 10 LEDs (3.6V per diode), total of 80 LEDs with one driver. The RT8561A is a current mode boost converter operated at 1MHz, wide VIN range covers from 6V to 24V and the on-chip current switch is rated at 2.5A.The PWM output voltage loop regulates the LED pins to 0.6V with an auto-adjustment circuit allowing voltage mismatches between LED strings. The RT8561A automati-cally detects and disconnects any unconnected and/or broken strings during operation from PWM loop to prevent VOUT from over voltage. The 1.5% matched LED currents on all channels are simply programmed with a resistor or a current sink. Both analog dimming and digitally controlled PWM dimming are supported by the RT8561A. Analog dimming is linearly controlled by an external voltage. With an on-chip output clamping amplifier and a 300kΩ resistor, PWM dimming signal is easily low-pass filtered to an analog dimming signal with one external capacitor for noise-free PWM dimming. A very high contrast ratio true digital PWM dimming can be achieved by driving ACTL pin with a PWM signal.Other protecting features include programmable output over voltage protection, LED current limit, PWM switch current limit and thermal shutdown.The RT8561A is packaged with a tiny footprint package of WQFN-24L 4x4 packages.</p>
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<li class="mv5"> <strong>High Voltage : V<sub>IN</sub> up to 24V, V<sub>OUT</sub> up to 40V, Driving up to 80 x 3.6V LEDs (10 each channel) <br /></li><li class="mv5"> <strong>Channel Current Programmable 10mA to 30mA and Matched to 1.5%<br /></li><li class="mv5"> <strong>Current Mode PWM 1MHz Boost Converter<br /></li><li class="mv5"> <strong>Easy Analog and Digital Dimming Control<br /></li><li class="mv5"> <strong>Programmable Soft Start<br /></li><li class="mv5"> <strong>Automatic Detecting Unconnected and/or Broken Channel<br /></li><li class="mv5"> <strong>Programmable Over Voltage Protection<br /></li><li class="mv5"> <strong>Disconnects LED in Shutdown<br /></li><li class="mv5"> <strong>Providing High Accuracy Digital Dimming by PWM at ACTL Pin<br /></li><li class="mv5"> <strong>V<sub>IN</sub> Under Voltage Lockout<br /></li><li class="mv5"> Over Temperature Protection<br /></li><li class="mv5"> Current Limiting Protection<br /></li><li class="mv5"> Small 24-Lead WQFN Package<br /></li><li class="mv5"> RoHS Compliant and Halogen Free</strong></strong></strong></strong></strong></strong></strong></strong></strong></strong></li>
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<li class="mv5"> UMPC and Notebook Computer Backlight<br /></li><li class="mv5"> GPS, Portable DVD Backlight<br /></li><li class="mv5"> Desk Lights and Room Lighting</li>
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